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A rectangular aluminum bar with a cross-section of (0.02 x 0.08) m^2 and length 1 m carries a current of 100A. The conductivity of aluminum is 3.54 x 10^7 S/m.

a. Determine the resistance of the bar along its length.

b. Determine the current density flowing along the length of the bar.

c. Determine the electric field within the bar.

d. Determine the electric potential difference between the two ends of the bar.

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